ffmpeg 编译安装android和linux

ffmpeg 编译安装android和linux

下载：https://github.com/FFmpeg/FFmpeg
https://www.ffmpeg.org/download.html

envirenment

ndk: https://github.com/android/ndk/wiki/Unsupported-Downloads

sudo apt-get install build-essential pkg-config
sudo apt-get intall libx264-dev libspeex-dev libfdk-aac-dev

编译安装脚本

#!/bin/bash
# 清空上次的编译
make clean
#你自己的NDK路径.
#export NDK=/home/anjoiner/Android/Sdk/ndk-bundle
#export NDK=/home/light/Android/Sdk/ndk/25.1.8937393
export NDK=/mnt/light-link/DevTools/android-ndk-r21d
TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64/
API=30

function build_android
{
echo "Compiling FFmpeg for $CPU"
./configure \
    --prefix=$PREFIX \
    --enable-neon \
    --enable-hwaccels \
    --enable-gpl \
    --enable-postproc \
    --enable-shared \
    --enable-jni \
    --enable-mediacodec \
    --enable-decoder=h264_mediacodec \
    --disable-static \
    --disable-doc \
    --enable-ffmpeg \
    --disable-ffplay \
    --disable-ffprobe \
    --enable-avdevice \
    --disable-doc \
    --disable-symver \
    --cross-prefix=$CROSS_PREFIX \
    --target-os=android \
    --arch=$ARCH \
    --cpu=$CPU \
    --cc=$CC
    --cxx=$CXX
    --enable-cross-compile \
    --sysroot=$SYSROOT \
    --extra-cflags="-Os -fpic $OPTIMIZE_CFLAGS" \
    --extra-ldflags="$ADDI_LDFLAGS" \
    $ADDITIONAL_CONFIGURE_FLAG
make clean
make -j20
make install
echo "The Compilation of FFmpeg for $CPU is completed"
}

export target_arch=$1
if [ "${target_arch}" = "" ]; then
    target_arch=armv8a
fi;

echo ${target_arch}

if [ "${target_arch}" = "armv8a" ]; then
    echo ${target_arch} is armv8a
    #armv8-a
    ARCH=arm64
    CPU=armv8-a
    CC=$TOOLCHAIN/bin/aarch64-linux-android$API-clang
    CXX=$TOOLCHAIN/bin/aarch64-linux-android$API-clang++
    SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
    CROSS_PREFIX=$TOOLCHAIN/bin/aarch64-linux-android-
    PREFIX=$(pwd)/build/$CPU
    OPTIMIZE_CFLAGS="-march=$CPU"
    build_android
elif [ ${target_arch} = "armv7a" ]; then
    echo ${target_arch} is armv7a
    #armv7-a
    ARCH=arm
    CPU=armv7-a
    CC=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang
    CXX=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang++
    SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
    CROSS_PREFIX=$TOOLCHAIN/bin/arm-linux-androideabi-
    PREFIX=$(pwd)/build/$CPU
    OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
    build_android
elif [ ${target_arch} = "x86" ]; then
    echo ${target_arch} is x86
    #x86
    ARCH=x86
    CPU=x86
    CC=$TOOLCHAIN/bin/i686-linux-android$API-clang
    CXX=$TOOLCHAIN/bin/i686-linux-android$API-clang++
    SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
    CROSS_PREFIX=$TOOLCHAIN/bin/i686-linux-android-
    PREFIX=$(pwd)/build/$CPU
    OPTIMIZE_CFLAGS="-march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32"
    build_android
else
    echo ${target_arch} is default x86_64
    #x86_64
    ARCH=x86_64
    CPU=x86-64
    CC=$TOOLCHAIN/bin/x86_64-linux-android$API-clang
    CXX=$TOOLCHAIN/bin/x86_64-linux-android$API-clang++
    SYSROOT=$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot
    CROSS_PREFIX=$TOOLCHAIN/bin/x86_64-linux-android-
    PREFIX=$(pwd)/build/$CPU
    OPTIMIZE_CFLAGS="-march=$CPU -msse4.2 -mpopcnt -m64 -mtune=intel"
    build_android
fi;

编译安装完成后在指定路径下生成 build/${CPU} 子目录，里面的 include 和 lib 是我们需要的头文件和动态库